1311210234 has 64 divisors (see below), whose sum is σ = 3059510400. Its totient is φ = 415666944.

The previous prime is 1311210169. The next prime is 1311210239. The reversal of 1311210234 is 4320121131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1311210239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98674 + ... + 111170.

It is an arithmetic number, because the mean of its divisors is an integer number (47804850).

Almost surely, 2^1311210234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311210234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529755200).

1311210234 is an abundant number, since it is smaller than the sum of its proper divisors (1748300166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311210234 is a wasteful number, since it uses less digits than its factorization.

1311210234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12604 (or 12598 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1311210234 is about 36210.6370283650. The cubic root of 1311210234 is about 1094.5210290271.

Adding to 1311210234 its reverse (4320121131), we get a palindrome (5631331365).

The spelling of 1311210234 in words is "one billion, three hundred eleven million, two hundred ten thousand, two hundred thirty-four".